Glass-blowing machine



June 17 1930.

1.. D. soueuz GLASS BLOWING MACHINE Fiied' Oct. 2; 1922 2 Sheets-Sheet 1 Patented June 17, 1930 I I UNITED; STATES PATENT v oF IcE LEONARD, 1). so'U'BIER; or roLnno, 01110, ASSIGNOR T OWENS-ILLINOIS GLASS COMPANY; or TOLEDO, onro, A CORPORATION or OHIO amiss-Browne MACHINE Application filed October 2, 1922. Serial F0. 591,750.-

invention relates to automatic glass blowing machines adapted for'the manufacture of bottles and other hollow glassware.

. shows the plunger partially withdrawn and' In the accompanyin d im An obj ect-of the invention is to provide improved means for eliminating from the finished ware, the usual scar or chill mark incident to the severing of the charge ,of glass in" the mold. A further object of the invention is to provide an even and proper distribution of the glass as itis blown in themold, thereby avoiding thin shoulders and other defects due to an imperfect distribution of the glass as it is blown. v g p Other objects of the invention will appear hereinafter.

Figure 1 is a sectional elevation of part of a glass blowing machine to which the present invention is applied.

Figure 2 is a front elevation of a the mechanism shown in Figure 1.; Figures 3 to 6 illustrate successive steps in the formation ofa glass jar or bottle.- F igure 3 shows the 1 blank mold, plunger and portion of knife immediately after the charge has been drawn into the mold and severed. Figure 4 a charge of glass drawn up therewith to.form

A 'the neck of the article. Figure 5 shows the shows the glass blown to its glass blown in the blank mold. Figure 6 final form in the finishing mold.

Figure 7 is a detail sectional viewof the lower end of the plunger. v

The invention is herein shown in connection with an automatic machine of the Owens typein which the blank molds, carried on a contin uously rotating carriage, are successively brought into contact with a pool of molten glass and receive their charge by suction.

The mold carriage 10 is driven by power supplied through a shaft 11, pinion 12.and annular gear 13 on the moldcarriage, the latter beingmounted to rotate continuously about a 1 stationary central column 14. Sup orted on the carriage'are dipping heads or rames 15 each carrying a blank mold'16, a neck mold 17, a blowing head 18, plunger 19 and mechanism for operating said parts. As the carriage rotates, the blank molds 16 are successively controlled by, a stationary cam 21fon which.

runsa roll 22 carried by a slide block 23 slido0 able radiallyof the machine in guides 24, said slide block being connected through a bell crank 25 tothefraine 15. During thecharging of the blank mold; the plunger 19 is in its lowermost position (Figs. 1 and 3). The up and down movements of the plunger are effected by means of a cam 26 on which runs a r0112? carried by'aslide block 28 connected through alink 29 to a gear segment 30 in mesh with rack teeth formed on the 19.

Mounted on the lower end of the plunger plunger rod for limited sliding movement lengthwise of the rod is a' head 32 having a sleeve extension 33 which in its lowermost position termi nates substantially flush with the lower end of'the rod. The head 32 is yieldingly held in its lowered position by a coil spring 34. The upper end of the spring bears against a pin,

35 extending through the rod 19, said pin also serving as a stop to limit the downward movement of the head on said rod. As the plunger is being lowered the head32 comes into co'ntact with the blowing head 18, thereby arrest- 7 ing its downward movement while the plunger continues to move downward to the position shown in Figures 1 and 3, in which the plunger projects a substantial distance within the blank mold.

When the blank mold is in position gathering its charge from the tank 9,. the plunger is in its lowered position (Fig. 3). Suction is now applied for drawing a charge of glass into the mold. This suction may be applied through the plunger which is profor v vided with a passageway 36 therethrough (Fig. 7) connected to a source of partialfvacuum. Aremovable tip 37 has a screw threaded connection 38 with the plunger rod. A narrow annular space or air-passage 39 is provided between the plungertip and the plunger, said space communicating with the opening 36. A port (Fig. 1) provides com munication fromthe interior'of the plungerrod to a passage 42 leading toa flexible pipe 43 and pipe line 44 leading to a vacuum chamber 45 and air chamber 46 in a distributing head 47 The pipe line 44 is connected to the vacuum .chamber through'a valve 48 which is through a roll 53 and slide block 54'connected' to a rack 55 in mesh with a pinion 56 on the shaft 51.

After the glass has'been severed, the blade 50 is advancedto the Figure 4 position in which an air pressure port 57 is over the opening in the bottom of the mold. The plunger rod is also withdrawn to the Figure 4 position,thehead 32 at this time remaining seated -on the blowing head 18. During this upward movement 10f the plunger rod; suction is applied through the head 18 at the extreme upper end of the annular space forming the finish cavity, and may also be maintained through-the plunger rod at a point spaced radially inward'from said upper end of'the cavity and at the lower end of the cavity wall, so that the vcharge of glass 58 is drawn .upward, following the plunger and entering the annular space betwe'en'the neck mold'and the sleeve 33 which forms a neck shaping member, to thereby form the neck 59 of the bottle, jar, or other article which is being produced. the same time, air under'pres- 7 sure is supplied through the knife arm 50,

4 i the mold, li g it therein and i mn thereby assistingjn forcing the glass upward ing' the neck. I Tlll'iflllf passage through the knife arm 50 is continued through a pipe 60 which leads to the pressure chamber 46.

After the operation just described, the,

knife 50 is advanced to the Fig. 5 position in which a recess 61 in the knifeblade is in register with the mold cavity. The .valve 48 reduce or eliminate any sear or shear mark.

is now closed and the valve 49 opened, thereby supplying air pressure through the pipe line 44 and through the 'hollowiplunger rod to blowfthe glass to hollowform in the'blank mold, as shown in Figure5. The glass also enters theficavity 61, which isl'designed to that might otherwise appear-on thebottom of the finished ware. The valves-48- and 49 are controlled by a cam 62 operating through a bell crank 63. When the bell crank is moved to position to close the valve 48, it

operates through a lever 64 to open the valve.

49. The latter is closed by a spring 65 when w the valve 48 is opened.

After 'the parison has been formed as shown in Fig. 5, the knife is lowered vertically to clear the glass and then swung from beneath the mold. The up and down movements of the knife are controlled by a cam 66 operating" through a slide block 67, link 68 and bell crank 69,- the latter having a connection at 70 with the knife shaft 51. The

plunger is also entirely withdrawn after the I parison has been blown'in the blank mold, the mold 7 6.swung up and encloses the parison. As thesegme'nt 30 rotates to withdraw the plunger,

blank 'mold is opened and the finishing a cam 72 therein operates through.

a lever 73 tomove. a'slid'e valve'74 over the blowing head (Fig. 6). Air pressure is now supplied through said head to blow the glass jar or other article 7 5 to its final form. The

finishing mold may be carried, as is usual in Owens machines, on a frame 77 which swings about an axis 78, said frame being'supported on a cam track-79. The opening and closing movements of the finishing mold are con-.

trolled by a'cam 80.

- Modifications may the 'spiritand scope of my invention.

. lVhat'I claim is: 1. In a glass forming machine, the coin bination of a blank mold, a neck mold, a

shaping member cooperating with the'neck mold to providea neck cavity in which the neck of the glass article is formed, means '-to' charge the mold by suction, a plunger projecting into the.neck mold and movable lengthwise through the neck mold and said shaping member while the latter is in neck forming position, and means to withdraw the plunger'and said shaping member after the neck ortion of the article has been shaped.

2. n a lassforming machine, the com be resorted to within bination o a" blank mold, a plunger, a neck I shaping member carried with the plunger, means-to project the plunger into the mold the mold while the plunger is projected, and means to withdraw the plunger and shaping member.

3. The "combination of alblank mold, a

a plunger projecting through said sleeve, means to move said plunger into and out of ,the blank mold'and reciprocate the plunger. within'saidsleeve, means to cause the said sleeve to be withdrawn with the plunger, and

means to introduce a charge of glass into the tion; in the neck mold.

4. The combination of a blank mold, a neck mold, a sleeve" projecting into the neck mold blank mold while the sleeve is in-saidposiand forming therewith a neck cavity, a plunwhile the shaping member is stationary i'el-' ati've to the mold and thereby reduce the ef-] fective capacity of the. mold, means to charge neck mold, a sleeve rojecting into the neck ,mold and forming herewith a neck cavity,

blank mold, said plunger forming a closure ger projecting through said sleeve into the for the blank mold cavity, means to introduce a chargeofrglass into the mold While the plunger isin said positiommeans to with; draw the plunger to an intermediate position, means to force a portion ofthe glass intoth e plunger is in said intermediate position, means to then withdraw the plunger andsaid sleeve, and means to blowthe gla ss I 5. In a glass formingmachine, the dome bination of a blank mold, a neck mold, a plunger means to project the plunger down ward within the blank mold, means to charge the mold beneathth'e plungerby suction, the lower end of theplunger being substantially thesame diameter as the moldcavity, whereby the glass entering the mold is prevented, from passing upwardpast the plunger, means x to withdraw the plunger, means tocause' the her from the neck mold.

" end opposite the neck mold to receive' a charge glass to follow upward With the plungena neck mold, a shaping memben'surrou'nding the plunger and forming with theneckmold', a neck cavity in which'the glass ismol'dedi to form the neck of the article, andmeans to withdraw the plunger and said. shaping mem 6. In a glass forming machine, the :combi', nation of a blank mold, a neckmold separate from-the blank mold' and'in reglsterei therei with, a plunger extending through the neck 'mold, a hollow forming member surrounding j the plungerand shaped to-formwith the neck mold a neck cavity, meanst'o move the plun-v ger lengthwise within. the blank mold, and,

forming member to vary the capacity of the blank mold. the blank moldbeingopen'at the of glass, and means to introducea chargeof glass into the blank mold through said openend while the plunger and hollow forming: member are in the mold and shape the glass in said neck cavity. i

7. In a glass forming machine, the coma" binationzof a blank mold, .a neck mold'in register therewith, a plunger,- a hollow form-Q ing member surroundingthe' plunger and shaped to form with the neck-"mold a'neck cavity, means to introduce and -measure a"; charge of glass in the blank molda'ndshape it in said neck cavity, said plungerjh'avin-g an air passagetherethrough, means tofishift' the! plunger and thereby increase thcfcapacityof the blank mold and means for then $l pply ing air under pressure through-fthe plunga and blowing the glass to hollowjformin the blank mold. f j 8. In a glass forming machine, the com; binati'on of a blank-mold, a neck" mold in register therewith, a plunger, ajhollowjform-' ing member surrounding #the' plunger and shaped to form with the neck mold a: neck; cavity, means to introduce a charge of glass into the blank mold and shape it in'said with the, mold.

bination of a mol tinned finov'ement-f ber, plunger and blank .m'old,leaving the I p ..g1ass suspended fromwthe ne'ck'mold, a finishneck mold cavity to form the neck while thee" receive-a charge of-glass, meansl to 'dip said end in apooltozf-molten glass,means togather the glass by suctionjinfthe mold,;a plunger projecting downward" into the-fmol d,,a. cutterto, sever the agaimean tqjdrawthe pluni ger upwarcl,=mea ns'; to cause the charge of I glassto move upwardfwith; the fplunger, a sleeve surrounding'the plunger andforming v V kmold cavity into which thej'glass; enter during]; said upward movefmentofs'theplungen and means-to blow the 10L glassformingmachine',"ithelcom-;,

obination of a nold,;a sectional plunger, means .to project lthezplungeeinto the mold,emeans "to arrest fone'fojfr the plunger -"seoti onS.-, before the second sectionv has, completed its movem'entintothe mold, saidsecjond section forme 5i" wi 1. 10 6. a u g 1 a I ans to introduce a';ch-arge ofglassinto said :cup-v whilefisaid' second section is; fully profjected inthe-moldjf 11. Inga glass f'orminghmachine, the com telescoping sections, means to actuate? the plunger and: causeibothjsejction's to enter the mold, means {to arrest one section before. the otherf'section, has completed its .said' movement,- anelf'means}toyintroduce, a charge of glass int'oth'e'mold after said movement :has been completed a 'd bf l h P l gQ dis withdrawn;

12L jI n a; glassforming machine, the c0m-. 'bination eta-mold, a plunger comprising a neck. forming sectionand an inner se'ction, 'meansio project the plunger into themold, a stop to arrest" the neck iiorming; section-in neckformihg pof'siti n while permitting a conhefi'nner section, and charge of glass into means: to; introduce the mold.aftersaid-liilovement of the inner section has'been completed andbefore the plunger is; withdrawn;

cbination of ,a blank mold, a neck mold in register' therewith', the neck mold opening being ty, 'sai'd core being mofvable'throug h the sleeve to enter the blank'mold cavity.

I The method of forming parisons which a plunger O P iS I In agl ssfforming machine, the coini atthe normally fblosed erid of the mold to give shape to' the parison.

consists in drawing a'measured quantity of the mold, continuing suction afterclosing of the mold, and substantially simultaneously cutting ofi'suction' and applying'air pressure 15. In a machineEfor-f fr 'ng'hollow glass 11 body portion. andaneck mold portion for forming the exterior surface, oi the neck portion of the article, a,tubularinember extend ing into'said neck portion and shaped to form the; interior neck surface of the article, a plunger extendingthrough' said tubularmem ber into said body portion and hailing. itstdi- ,ameter substantiallyequal to the diameter of theLbody mold cavity, means :for bringing the "opposite end of the moldin contact with a supply body or molten glass and charging' l lthe'imold by suction,means-for severing the glass, a closure plate,means for bringing the closure plate into position toclose the charge receiving end "of themold, means for moving the plunger outwardly wl ile'* said;olosure plate is in-said position, and means cooperat-. ing with the. plunger for causingithe glass to move out of contact withothe clos urej plate when the plunger is moved ou wardly. v-..

p .16. In a m hinemr ming glass articles," lthecombination o fa'blank'moldopen atvits Y lower end, a neck moldahovel andkin register shaped to mold the inner gimme with the blank mold, a tubular. member projecting downward intorj the. 1. nee}! mold .and the-peck portion of the article, a plunger projecting into the blank mold, theouter] downward through said tubular member "ameter of the plunger'being substantiallylequaljto the blank mold 'oavity,fl"rneans tofintrodupe'la charge of glass by suctionth'rough thelower end of the mold, means 01" severing the glass,

a mold bottom'plate'moyabl'e' into position to close said bottomendo the mold, means for moving the plunger upward a-predetermined distance while said tubular-member is in said "molding position, and means cooperating withth'e plunger to cause the g1a'ss. to nove lupward outjof contactwith saidbottom plate when the plunger is-inoved upward. isigned at TOl(-s d0,lIl the county of Lucas", Y and State of Ohio, this 28th day of Sept,

LEONARD D. so BI Rf;

articles,the combination of'a mold comprising 

